.hero{background-image:url(../images/hero/1200w/ice_hiking_crampons.webp)}@media (min-width:1600px){.hero{background-image:url(../images/hero/2400w/ice_hiking_crampons.webp)}}.activity-introduction-section{background:var(--bg-black);padding:40px 20px;display:flex;justify-content:center}.activity-introduction-content{max-width:900px;line-height:1.6;text-align:center}.activity-introduction-content h1,.activity-introduction-content h2,.activity-introduction-content h6{margin-top:20px;margin-bottom:15px;text-align:center}.activity-introduction-content h1{border-bottom:2px solid var(--pureyellow);display:inline-block;padding-bottom:8px}.activity-introduction-content p{margin-bottom:15px;text-align:left}.scalable{display:block;max-width:100%;height:auto;margin:20px auto;border-radius:8px}.activity-introduction-center{text-align:center;margin-top:25px}.activity-description{display:flex;flex-direction:column;gap:40px;margin:0 auto;padding:20px}.activity-card{background:var(--bg-grey);border-radius:12px;border:1px solid var(--gold);overflow:hidden;box-shadow:0 6px 20px rgba(0,0,0,.6);transition:transform .3s ease,box-shadow .3s ease;width:100%;max-width:900px;margin:0 auto}.card-img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}.card-content{padding:20px;line-height:1.6}.card-content h2{margin-top:0;padding-bottom:8px;border-bottom:2px solid var(--gold);display:inline-block;text-align:center;width:100%}.card-content h4,.card-content h6{margin-top:15px;margin-bottom:8px}.card-content ul{margin:15px 0;padding-left:20px;list-style:disc}.card-content li{margin-bottom:8px}.card-content p{margin-bottom:15px}@media (max-width:768px){.activity-card{max-width:100%}}